The requested vessel with name KOSINMARU and MMSI:431005143 and IMO:0 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
KOSINMARU N/A 431700205 Nov 10, 2016 07:08 UTC
KOSINMARU NO.18 N/A 432378000 Feb 27, 2017 11:59 UTC

Also, you may try to find the vessel in our comprehensive Vessels Database or track this ship on the map.